Microwave Limb Sounder

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Overview

These are observations of vertical profiles of the abundance of BrO, ClO, CO, H2O, HCl, HCN, HNO3, HO2, HOCl, N2O, O3, and OH, along with temperature, geopotential height, relative humidity (deduced from the H2O and temperature data), and cloud ice water content, all described as functions of pressure. In v2.2 these profiles are output on a grid that has a vertical spacing of six surfaces per decade change in pressure (~2.5 km),thinning out to three surfaces per decade above 0.1 hPa (cloud ice is an exception to this, having a finer vertical grid). Horizontally the profiles are spaced by 1.5 degree great-circle angle along the orbit, which corresponds to about 160 km. The true vertical and horizontal resolution of the products is typically somewhat coarser than the reporting grid described here. For some of the products, the signal to noise ratio is too low to yield scientifically useful data from a single MLS profile observation. In these cases, some form of averaging (e.g., weekly maps, monthly zonal means etc.) will be required to obtain more useful results.

In addition to these standard products, the algorithms also produce data for many diagnostic products. The bulk of these are similar to the standard products, in that they represent vertical profiles of retrieved species abundances. However, the information on these diagnostic products has typically been obtained from a different spectral region than that used for the standard products.

Below is a chart of all EOS MLS products. You may click on a product to view more information about it. Further and essential information is in the Data Quality Document. Spectroscopy information on EOS MLS products can be found in the JPL Spectroscopy Catalog.

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EOS MLS Scientific Measurements